Re: [TCML] Critical Coupling?

[mddeming@xxxxxxx]

Hi Dex,
 
I have heard it used in two different ways. For  TCs that use to be used in non-breakout mode in x-ray supplies, etc. the traditional formula you show was applicable. For TCs with breakout, the streamers cause the Q(sec) to vary wildly as they grow and shrink and a more "operational" definition has often been used. In this case, the "practical" critical value is the value you can push it to without causing catastrophic racing sparks. 





-----Original Message-----
From: Dex Dexter <dexterlabs@xxxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Thu, Jan 14, 2010 2:02 pm
Subject: [TCML] Critical Coupling?



n radio engineering critical coupling of 2
uned coupled LC circuits is defined as:
k=1/SQRT(Q1*Q2)
Q1,Q2 are quality factors of first and second
ircuit.
I notice that term "critical coupling" is 
ften refered to in the context of tesla coils
nd coiling as well.
Does it have the same meaning and definition
ike in radio engineering?
If not,please explain what it is and give definition
f it.
Dex  

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